Oxford Street burned for three weeks. The British Museum is occupied by ragtag survivors. The Regent's Park camps have been bombed. The Nazareth Act has come into force. If you can't produce your identity card, you don't exist. Lalla, sixteen, has grown up sheltered from the new reality by her visionary father, Michael Paul. But now the chaos has reached their doorstep. Michael has promised to save them. His escape route is a ship big enough to save five hundred people. But only the worthy will be chosen. Once on board, as day follows identical day, Lalla's unease grows. Where are they going? What does her father really want? What is the price of salvation?